Alcea rosea 'Polarstar'
Hollyhock
Not currently listed at our partner nurseries.
Essentials
At a Glance
Plant Type
Perennial
Height
60 inches
Width
24 inches
Light
Full Sun, Partial Sun
Zones
4, 5, 6, 7, 8, 9
Water
Moderate
Humidity
Average
Lifespan
Perennial
Native To
Asia
Toxicity
Non-toxic
The Story
Plant Bio
Alcea rosea 'Polarstar' is a tall perennial with attractive white flowers and a robust structure, often used in borders and gardens. This cultivar features exceptionally pure white blooms and a long flowering season, distinguishing it from other hollyhocks.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
We couldn't find this plant listed online right now.
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Planting
How to Grow
- Tuck seeds 1/4 inch deep into well-draining soil in early spring.
- Water regularly to keep soil moist but not waterlogged.
- Provide full sun for optimal growth and flowering.
- Support tall stems with stakes to prevent wind damage.
- Fertilize monthly with a balanced fertilizer during the growing season.
- Deadhead spent flowers to encourage more blooms.
Pro Tip
Start seeds indoors 6 weeks before the last frost for earlier blooms.
Keep It Thriving
Care Guide
Do
- Tuck seeds into moist soil for germination 🌱
- Prune after flowering to promote bushier growth
- Water consistently during dry spells
- Apply organic compost yearly
Don't
- Don't overwater to prevent root rot ❌
- Avoid heavy clay soil without amendment
- Refrain from fertilizing late in the season
- Don't let stems flop without support
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pest Check | ||||||||||||
| Prune | ||||||||||||
| Spring Cleanup | ||||||||||||
| Stake |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know